Air Flow Products 84DB04 Duct Board Tab Takeoff 4 in

Product Description

The AIR FLOW PRODUCTS 84DB04 is a duct board tab takeoff fitting designed for use in low-pressure sheet metal and duct board distribution systems. This fitting creates a branch connection off a main duct board trunk, directing conditioned air into a lateral run. The tab-style design mechanically locks into the duct board surface without the need for additional adhesive fasteners in most applications. HVAC installers and sheet metal fabricators working on residential and light commercial air distribution systems will reach for this fitting during new construction and retrofit duct builds.

The 84DB04 is sized at 4 inches and is suited for low-velocity supply air branch takeoffs from duct board trunk lines. It is a standard-format fitting used in residential forced-air systems where duct board is the primary trunk material. The tab takeoff format allows for clean, repeatable connections at branch points along a duct board main, supporting consistent airflow distribution across a supply system.

Key Features

• 4-inch opening sized for standard residential branch duct runs
• Tab-style attachment interfaces directly with duct board trunk material
• Designed for use in low-pressure forced-air distribution systems
• Supports repeatable branch connections for consistent airflow

Compatibility

Designed as an OEM-style replacement and standard fitting for duct board trunk line installations in residential and light commercial forced-air HVAC systems.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal installers during duct fabrication or retrofit. Power down the air handling unit and confirm the system is de-energized before working inside any duct section. Follow local mechanical codes and ACCA Manual D duct design guidelines for branch sizing and takeoff placement. Seal all connections per local code requirements using approved duct sealant or tape rated for the application.

Technical Specifications

• Size: 4 inches
• Type: Duct Board Tab Takeoff
• Series: 84DB

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84DB04